SU1143472A1 - Vortex dust catcher - Google Patents

Abstract

Vortex dust collector containing a cylindrical body placed along the axis of the case in the lower part of the axial input of a swirling gas flow with a fender washer placed on it, dividing the main body into the separation and drinking chamber, placed in the upper part of the body of the axial exhaust nozzle and input of the swirled flow of secondary gas a louver grate located in the dust-collecting chamber and a recirculation pipe connecting the part of the dust-collecting chamber separated by the louvre grating with one of the gas inlets, differing in that, in order to improve the efficiency of dust collection, the plenum chamber is made of a larger diameter than the separation chamber, the lower part of which is immersed in the dust chamber, the puck is positioned at the lower edge of the spruce chamber, and the louvered grille is located in the annular space between the pictor box and the separator chamber. by cameras.

Description

4 CO 4 H O The invention relates to dust collection, in particular, to chambers based on the principle of centrifugal separation, and can be applied in various industries. The known vortex dust catcher operating according to the principle of centrifugal separation in opposite swirling streams, contains a cylindrical separation chamber, nozzles for introducing primary and secondary swirling streams, a bushing washer and an exhaust pipe. The disadvantage of this dust collector is the low gas cleaning efficiency. This is due to the fact that part of the separated dust containing the fine fraction is not separated from the secondary washer from the breaker washer. In addition, this unit has a high energy consumption, because as a secondary gas, clean air under increased pressure is supplied through the nozzles. Also known is a vortex dust trap containing a cylindrical separation chamber, nozzles for introducing primary and secondary swirling streams, and an exhaust pipe. The lower part of the primary flow inlet pipe is connected to the space under the breaker washer f2j. Such a constructive solution to the dust collector allows suction of dust from the separation chamber together with a certain amount of secondary gas. However, as shown by experimental studies, a significant increase in the efficiency of dust collection is not achieved. This is due to the fact that trapped and settling dust under the fender washer is re-sucked into the nozzle and the separation chamber is thrown through it. The closest to the invention, in terms of the result achieved, is a swirling dust collector containing a cylindrical body positioned axially in the bottom of the body a gas stream with a baffle plate placed on it, dividing the body into a separating and picking chamber, located in the upper part of the body an axial input port and entering a swirled flow a secondary gas, a louver grating placed in the dust-collecting chamber 2 on the side or concentrically to its walls, and a recirculation pipe connecting the part of the dust-collecting chamber separated by the louvre grille with one of the gas inlets h. However, in the known pulverizer, a significant increase in the gas cleaning efficiency is not achieved. This is due to the fact that the separated dust coming from the chamber into the bunker is deposited on the plates of the louver dust separator, is carried away from them by the suction gas, and then re-enters the separation chamber. The purpose of the invention is to increase the efficiency of dust collection. This goal is achieved in a vortex dust collector containing a cylindrical body placed along the axis of the body in the lower part of the axial introduction of a swirling gas flow with a fender washer placed on it. separating the dust collection chamber, an axial outlet pipe in the upper part of the housing and input of a swirling secondary gas flow, a louver grille placed in the dust collection chamber, and a recirculation pipeline, part of the picking chamber separated from the louver, with one of them gas inlets, a dust collector chamber is made of a larger diameter than the separation chamber, the lower part of which is immersed in a psisbodznaya chamber, a fender washer is placed at the lower edge in the separation chamber, and The grate is located in the annular space between the dust collection and separation chambers. The drawing shows schematically the proposed vortex dust collector. The separator contains a cylindrical separation chamber 1, the primary inlet 2 and secondary 3 swirling flow inlets, a gas outlet nozzle 4, a fender washer 5 and a swirler 6 mounted on the nozzle 2. The cylindrical dust collector chamber 7 and the camera 1 are installed coaxially to form an annular space 8 in which a louver splitter 9 is installed, Chamber 7 communicates with nozzles 2 and 3 via nozzles 10 or 11, Washer 5 is installed on nozzle 2 at the lower edge 12

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separation chamber 1. In the pipe 2 ejector 13 is installed.

Dust collector works in the following way.

A gas suspension with entrained dust enters chamber 1 through nozzles 2 and 3 (it is possible that dusty gas is supplied through nozzle 2, and clean air is supplied through nozzle 3), the gas suspension passes through nozzle 2 and is twisted by means of a swirler 6. The gas flow flowing into the chamber 1 through the nozzle 3 is also screwed (this is ensured by the tangential installation of the nozzle 3 with respect to the camera 1 or the installation of additional swirlers). The gas suspension spun in one direction interacts with i pyroM. Under the action of centrifugal particles, dust particles are transferred to the inferior zone of the chamber and transported by the secondary stream to the lower part of the dust collector under the pick washer 5. The process of separating the separated dust from the secondary gas

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proceeds in the area of the fender washer 5 and the lower edge 12 of the separation chamber 1. The secondary flow, turning under the fender washer 5, goes upwards 5 into the chamber 1. Dust particles along with the rotating flow passes the melda fender disc 5 and the lower edge 12 of the separation chamber 1. at the level of the lower edge 12, particles

10 dust under the action of centrifugal forces fall into a cylindrical chamber 7 of a larger diameter than chamber 1. By the action of centrifugal forces, parts of the body are thrown to the walls of chamber 7,

fSa and the rotating flow is returned cleaned to chamber 1. Separated: the cylinder does not precipitate under the force of gravity H4 "aluses of dust separator 9. A part of the gas from chamber 7 is drawn off 20 with ejectors 13 into nozzles 2 or 3.

The proposed extraction of the dust collector allows reducing the amount of dust recirculating to the separation chamber and, thus, increasing the effectiveness of dust removal.

Claims (1)

Vortex dust collector, comprising a cylindrical housing located along the axis of the housing at the bottom of the axial inlet of a swirling gas flow with a bump washer located on it, dividing the housing into a separation and dust collection chamber, an axial outlet pipe and an introduction of swirling secondary gas flow in the upper part of the housing, a louver a grate located in the dust chamber, and a recirculation pipe communicating a part of the dust chamber separated by a louvre grate with one of the gas inlets, characterized in that, with spruce enhance the effectiveness of dust collection, pypesbornaya chamber being of greater diameter than the separation, the lower part of which is po- _Λ ship in pypesbornuyu chamber otboy- Nye washer 5 is placed at the lower edge in the separation chamber, and the louvre is located in the annular space between the dust collection chambers and separatsyonnoy . §C .. <<η 1143472 ί 1143472 2